Originally Posted by
Stranger
As I recall, in the case of Turkish DC-10 that crashed in France, because of cargo doors not properly locked even though the unlocked doors indicators in the cockpit showed them locked, floor did play a role.
When the cargo door fell off, the cargo compartment lost pressurization and the pressure ended up applied on the floor, because venting was not sufficient, and the floor collapsed.
(On second thought not sure if that happened in the Turkish case, or in another DC-10 cargo door incident, a US-registered plane, over Canada -possibly Windsor. Which however survived and landed somewhere.)
I vaguely remember something similar, but the issues are quite different as you might agree. My point is that a damaged floor as described in this thread is most likely not a flight critical issue if discovered in flight. It is a maintenance issue on landing. What you are talking about is the inability of the floor to take unanticipated differential pressure loads due to cargo area depressurization and insufficiently fast venting of the passenger area pressure...